Arrowhead with removable blades

ABSTRACT

A readily disassemblable hunting arrowhead including a first blade engaged in a slot communicating with the front end of the collet and a second blade, orthogonal to the first, engaged in a second slot communicating with the rear end of the collet. Rearwardly and inwardly extending portions of the blades form wedge shaped elements which are engaged and wedged onto the collet by a beveled ferrule threaded onto the rear of the collet. There is a windsplit attached to the collet in front of each side edge portion of the second blade.

United States Patent 1 1 Richter 273/1065 B Karbo June 26, 1973 4]ARROWHEAD WITH REMOVABLE BLADES 2,289,284 7/1942 Chandler 273/1065 B[75] Inventor: Richard S. Karbo, Whittier, Calif.

Przmary Examiner-Richard C. Pmkham [73] Ass1gnee: Brunswick Corporation,Chicago, Ill. Assistant Examiner pau] Shapiro 22 Filed: F 11 1971 IAttorney- Donald Olexa, JOhl'l Heimovies t a1. [211 App]. No.: 114,586[57] ABSTRACT A readily disassemblable hunting arrowhead including [22]2751:3650]; a first blade engaged in a Slot communicating with the d "55 B front end of the collet and a second blade, orthogonal [5 1 0 to thefirst, engaged in a second slot communicating R f Ci d with the rear endof the collet. Rearwardly and in- [56] e creams wardly extendingportions of the blades form wedge UNITED STATES PATENTS shaped elementswhich are engaged and wedged onto 2,912,247 11/1959 Doonan 273/1065 Bthe collet by a beveled ferrule threaded onto the rear 2,829,894 v4/1958 Henkelg 273/ 106-5 B of the collet. There is a windsplit attachedto the collet 2,909,372" lo/19519 'N r- 273/106-5 B in front of eachside edge portion of the second blade. 3,614,103 10/1971 Carroll273/1065 B 2,940,758 3 Claims, 3 Drawing Figures 1 ARROWHEAD WITHREMOVABLE BLADES BACKGROUND OF THE INVENTION 1. Field of the InventionThe present invention relates to archery equipment and more particularlyto arrowhead constructions.

2. Description of the Prior Art The arrowhead of the present inventionis an improvement over an arrowhead construction described in U. S. Pat.application Ser. No. 47,219 filed June 18, 1970 now abandoned. In thatapplication the arrow head comprised a collet having a frontal pointsecton and four segmental sections extending rearwardly therefrom. Apair of blade members are positioned to extend through the slots formedbetween the collet segments and extend radially outward therefrom. Acollar is provided to be threadedly connected to the rear extremities ofthe segments to hold the segments together and secure the bladesthereto.

A shortcoming with the arrowhead of the prior application is that thefrontal point section of the collet is not sharp enough to have thedesired piercing quality. As a result, the blades, which have novelrazor cutting edges, do not have the opportunity to functionproperly toprovide deadly cutting edges for killing game.

Another shortcoming with the arrowhead of the abandoned application isthat the interchanging of the blades is cumbersome. Moreover, sincethese blades are not secured to the collet until the collar isinstalled, the blades would quite often fall out and become lost duringassembly.

SUMMARY OF THE INVENTION The present invention overcomes theabovementioned shortcoming by providing an arrowhead having a greatlyimproved frontal point section for a greater piercing capability and anovel interconnecting means for greater ease of assembly. The improvedarrowhead comprises an elongated substantially cylindrical collet havinga slotted frontal area and a threaded rear extremity. A first triangularblade is provided having a frontal point section and two legs extendingrearwardly therefrom. The blade further comprises a cutout portionhaving an interior apex where the two legs originate. The interior apexof the blade is adapted to extend into the slotted frontal area of thecollet while the legs are adapted to extend longitudinally along thesides of the collet. The interior of the legs form a'pair of footsections which are adapted to snap into engagement with a pair of axialgrooves formed near the rear end of the collet. The exterior edges ofthe blade extending from the apex of the frontal point rearwardly alongthe exterior edges of the legs are finely honed to a razor sharpness toenhance the piercing and cutting capabilities of the arrowhead. The rearend of the collet further comprises a transverse slot separating thatportion of the collet into two segments. A second blade is adapted toextend into the slot with the blade having two razor edges extendingradially outward therefrom for cutting purposes. A ferrule is providedto be connected to the threaded end of the collet with the ferrulefurther comprising an annular flanged portion which is adapted to extendover the foot portions of the first blade and portions of the secondblade for securing the blades to the collet.

An important advantage of the present invention is the piercing andcutting portions of the arrowhead are integral in a single removableblade. Not only are both sections honed to a razor sharpness, but ifthey become dull, the blade can be easily interchanged with a new blade.

Another important advantage of the present invention is that the bladechanging can be accomplished easier and quicker than heretoforepossible.

The features of the present invention which are believed to be novel areset forth with particularity in the appended claims. The presentinvention, both as to its organization and manner of operation, togetherwith further objects and advantages thereof, may best be understood byreference to the following description, taken in connection with theaccompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective viewof the arrow head assembly of the present invention;

FIG. 2 is an elevational view of the arrowhead in its assembled form;and

FIG. 3 is a sectional view of the arrowhead taken along line 33 of FIG.2.

DESCRIPTION OF THE PREFERRED EMBODIMENT Referring now to the drawings,FIGS. 1 3 show a detachable arrowhead assembly, generally indicated byarrow 10 comprising a substantially cylindrical collet 11 having a firstand second blades 13 and 1S respectively, mounted thereon. The collet 11includes a slotted frontal area 17 and a threaded rear extremity 19. Thefirst blade 13 is triangular in shape having a frontal point section 21and a pair of legs 23 extending rearwardly therefrom. The exterior edges24 of the blade 13 extending from the apex of the frontal pointrearwardly along the exterior edges of the legs 23 are finely honed to arazor sharpness to enhance the piercing and cutting capabilities of thearrowhead 10.

The interior of the first blade 13 includes a triangular cut-out portion25 in which the apex, where the two legs 23 originate, is adapted toextend into the slotted frontal area 17 of the collet 11. The collet 11further includes a pair of axial grooves 27 which are adapted to receivetwo inwardly extending foot portions 29 of the legs 23. Because of theirflexibility, the legs 23 are adapted to snap into engagement with thegrooves 27 after the interior apex of the blade is inserted into theslotted frontal area 17 of the collet 11. As can be seen, the firstblade 13 not only comprises the cutting edges 24, but it furthercomprises the frontal point section 21 integrally formed therewith. Theadvantage of this is that when the blade 13 becomes worn, a new bladecan be installed not only having sharp cutting edges, but having a sharppoint also.

The collet 11 further comprises a transverse slot 31 formed through therearward portion thereof for receiving the second blade 15.

The second blade 15 comprises a recessed portion 33 adapted to extend tothe forward end of the slot 31 with the forward portions of the recessinitiating a pair of radial cutting edges 35 extending radially outwardtherefrom. The rearward portion 37 of the second blade 15 is adapted toextend into the transverse slot 31 adjacent the threaded end 19 of thecollet 11.

A pair of windsplits 38 is also formed on the forward end of the collet11 and is positioned directly in front of the cutting edges 35 of theblade 15 for protecting the points 40 of the blade 15.

The arrowhead assembly further comprises a ferrule 39 which is adaptedto be threadedly connected to the collet 11. The ferrule 39 furthercomprises a frontal annular flanged portion 41 which is adapted toextend over the portion of the collet which contains the rear portion 37of the second blade and the foot portions 29 of the first blade 13. Forsecuring these portions to the collet, the exterior cylindrical surface43 of the ferrule 39 is adapted to be epoxyed into a bore 45 formedwithin the frontal end of an arrow shaft 47.

In assemblying the arrowhead assembly, the first blade 13 is mounted onthe collet 11 in the manner described above. Afterwhich, the secondblade 15 is inserted through the transverse slot 31 with both bladesbeing secured thereto by the ferrule 39 which is threadedly connected tothe collet 11.

An advantage of the present invention is that when the blades 13 and 15become worn, they can be easily replaced by simply separating the collet11 from the ferrule 39 and removing the first and second blades 13 and15 from the collet ll. Afterwhich, a new set of blades 13 and 15 can beeasily mounted on the collet 11 before it is threaded back onto theferrule 39.

It should be noted that various modifications can be made to theapparatus while still remaining within the purview of the followingclaims.

What is claimed is:

l. A readily disassemblable hunting arrowhead comprising:

an elongated collet having a first axial slot communicating with thefront end thereof and a second axial slot substantially orthogonal tosaid first slot and communicating with the rear end thereof,

a first substantially triangular blade comprising the tip of thearrowhead and having a rear undercut portion adapted to fit within saidfirst slot,

a second substantially triangular blade adapted to fit within saidsecond slot, said first and second blades having portions extendingrearwardly of the cutting edges thereof, said rearwardly extendingportions of said first and second blades are outward of said collet andinclined radially inwardly and toward the rear end thereof, and

means for retaining said blades in a position within said colletincluding means encompassing said rearwardly extending portionsremovably engageable upon the rear end of said collet for retaining saidblades in place, said means further including a ferrule having itsforward inner surface beveled substantially parallel to said incline soas to engage said inclined portions and wedge them inwardly upon beingengaged upon said collet.

2. A readily disassemblable hunting arrow comprisan elongated collethaving a first axial slot communicating with the front end thereof and asecond axial slot substantially orthogonal to said first slot andcommunicating with the rear end thereof,

a first substantially triangular blade comprising the tip of thearrowhead and having a rear undercut portion adapted to fit within saidfirst slot,

a second substantially triangular blade adapted to fit within saidsecond slot, said first and second blades having portions extendingrearwardly of the cutting edges thereof, said second blade comprising aunitary structure including a body portion adapted to ride within saidsecond slot and two side edge portions each extending along the surfaceof said collet from a point forwardly of said second slot and anglingradially outward and rearwardly therefrom, and

means for retaining said blades in position within said collet includingmeans encompassing said rearwardly extending portions and removablyengageable upon the rear end of said collet for retaining said blades inplace, said collet includes a plurality of windsplints each terminatingat the most forward point of the side edge portion of said second blade.

3. A readily disassemblable hunting arrowhead comprising:

a. an elongated collet having a first axial slot communicating with thefront end thereof and a second axial slot substantially orthogonal tothe first slot and communicating with the rear end thereof;

b. a first substantially triangular blade comprising the tip of thearrowhead and having a rear undercut portion adapted to fit within thefirst slot;

0. a second substantially triangular blade adapted to fit within thesecond slot, the first and second blades having portions extendingrearwardly of the cutting edges outward of the collet and inclinedradially inwardly and toward the rear end thereof; and,

d. a ferrule removably engageably mounted on the rear end of the collet,the ferrule having its forward inner surface beveled substantiallyparallel to the inclined portions of the blades so as to engage theinclined portions and wedge them inwardly upon being engaged upon thecollet. III I I.

1. A readily disassemblable hunting arrowhead comprising: an elongatedcollet having a first axial slot communicating with the front endthereof and a second axial slot substantially orthogonal to said firstslot and communicating with the rear end thereof, a first substantiallytriangular blade comprising the tip of the arrowhead and having a rearundercut portion adapted to fit within said first slot, a secondsubstantially triangular blade adapted to fit within said second slot,said first and second blades having portions extending rearwardly of thecutting edges thereof, said rearwardly extending portions of said firstand second blades are outward of said collet and inclined radiallyinwardly and toward the rear end thereof, and means for retaining saidblades in a position within said collet including means encompassingsaid rearwardly extending portions removably engageable upon the rearend of said collet for retaining said blades in place, said meansfurther including a ferrule having its forward inner surface beveledsubstantially parallel to said incline so as to engage said inclinedportions and wedge them inwardly upon being engaged upon said collet. 2.A readily disassemblable hunting arrow comprising: an elongated collethaving a first axial slot communicating with the front end thereof and asecond axial slot substantially orthogonal to said first slot andcommunicating with the rear end thereof, a first substantiallytriangular blade comprising the tip of the arrowhead and having a rearundercut portion adapted to fit within said first slot, a secondsubstantially triangular blade adapted to fit within said second slot,said first and second blades having portions extending rearwardly of thecutting edges thereof, said second blade comprising a unitary structureincluding a body portion adapted to ride within said second slot and twoside edge portions each extending along the surface of said collet froma point forwardly of said second slot and angling radially outward andrearwardly therefrom, and means for retaining said blades in positionwithin said collet including means encompassing said rearwardlyextending portions and removably engageable upon the rear end of saidcollet for retaining said blades in place, said collet includes aplurality of windsplints each terminating at the most forward point ofthe side edge portion of said second blade.
 3. A readily disassemblablehunting arrowhead comprising: a. an elongated collet having a firstaxial slot communicating with the front end thereof and a second axialslot substantially orthogonal to the first slot and communicating withthe rear end thereof; b. a first substantially triangular bladecomprising the tip of the arrowhead and having a rear undercut portionadapted to fit within the first slot; c. a second substantiallytriangular blade adapted to fit within the second slot, the first andsecond blades having portions extending rearwardly of the cutting edgesoutward of the collet and inclined radially inwardly and toward the rearend thereof; and, d. a ferrule removably engageably mounted on the rearend of the collet, the ferrule having its forward inner surface beveledsubstantially parallel to the inclined portions of the blades so as toengage the inclined portions and wedge them inwardly upon being engagedupon the collet.